Question: A 20 m long bored concrete pile having a diameter of 350 mm is load tested, and the data are given below: Also given: E

A 20 m long bored concrete pile having a diameter of 350 mm is load tested, and the data are given below: 

 Load (kN) 0 250 500 750 1000 1250 1000 750 500 250 Settlement 0 2.0 5.0 8.2 15.0 39.6 39.5 38.2 37.5 36.1 35.5 (mm)


Also given: Econcrete = 25 × 103 MN/m2.

a. Estimate the allowable pile load using Davisson’s (1973) method, with FS = 2.5.

b. At the maximum load of 1250 kN, what are the total and net settlements?

Load (kN) 0 250 500 750 1000 1250 1000 750 500 250 Settlement 0 2.0 5.0 8.2 15.0 39.6 39.5 38.2 37.5 36.1 35.5 (mm)

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